# A127533 (b-file synthesized from sequence entry)
0 0
1 0
2 0
3 2
4 17
5 100
6 506
7 2366
8 10556
9 45696
10 193800
11 810084
12 3350479
13 13748020
14 56071470
15 227613750
16 920540040
17 3711935040
18 14932102320
19 59951235420
20 240316859250
21 962056169256
22 3847193657076
23 15370712686252
24 61364157982952